Implement Platform.String and v1.ParsePlatform

[imjasonh]

No description provided.

[codecov-commenter]

Codecov Report

Merging #1270 (1b4985b) into main (a83d6e9) will increase coverage by 0.13%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #1270      +/-   ##
==========================================
+ Coverage   73.78%   73.91%   +0.13%     
==========================================
  Files         111      111              
  Lines        8289     8332      +43     
==========================================
+ Hits         6116     6159      +43     
  Misses       1571     1571              
  Partials      602      602              

Impacted Files	Coverage Δ
pkg/v1/platform.go	100.00% <100.00%> (ø)

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